Lean Six Sigma Yellow Belt Certification Assessment 3

Question 1

What type of data is collected when counting the number of scratches on a painted surface?

Accepted Answer

Attribute data

Answer

Counting defects (scratches) produces attribute data, which is discrete and counts occurrences rather than measuring a dimension.

Question 2

In a Lean Six Sigma assessment, what does Overall Equipment Effectiveness (OEE) measure?

Accepted Answer

The combined impact of availability, performance, and quality on productive output

Answer

OEE multiplies availability, performance rate, and quality rate to give a single metric of how effectively equipment is being used.

Question 3

Which chart is most appropriate for assessing the proportion of defective items in a process when sample sizes vary?

Accepted Answer

p-chart

Answer

The p-chart tracks the proportion of defective units and accommodates varying sample sizes, making it suitable for attribute data with changing subgroup sizes.

Question 4

A team uses a spaghetti diagram during process assessment. What does this tool primarily reveal?

Accepted Answer

Physical movement and travel paths of people or materials

Answer

A spaghetti diagram traces the physical movement paths in a workspace to identify excessive travel that represents waste.

Question 5

When assessing a process, a team discovers that 80% of defects come from 20% of causes. Which principle does this illustrate?

Accepted Answer

Pareto Principle

Answer

The Pareto Principle (80/20 rule) states that a small number of causes typically account for the majority of problems or defects.

Lean Six Sigma Yellow Belt Certification Practice Test

Lean Six Sigma Yellow Belt Certification Practice Test

Lean Six Sigma Yellow Belt Certification Assessment 3